Abstract
Magnetic properties of graphene and its derivatives are very fascinating because of their promising application in spintronics. Among the graphene family materials, graphene oxide is quite typical and special for the magnetic performance. Herein we report a systematic and detailed investigation on the magnetic properties of graphene oxide. Compared to the previous reports on the ferromagnetism, our results show that graphene oxide is indeed only paramagnetic. The magnetic properties can be well described by the Curie-Weiss law. This study is not only revealing the paramagnetism in graphene oxide but also calling a revisit about the magnetic properties of graphene oxides, graphene and the other derivatives of graphene.
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